Java

4.5    Library Support for Arrays

Arrays are objects, but they “can’t do” much. In many other programming languages, such as JavaScript, the situation is quite different. In Java, the methods are swapped out, especially in java.util.Arrays .

4.5.1    Cloning Can Be Worthwhile: Propagating Arrays

To create a copy of an array with the same size and element type, you can use the object method clone() . [ 108 ]

This method clones—in our case copies—the elements of an array object into a new array.

[eg]  Example

The following code finds out whether an array is sorted or not:

int[] numbers = { 1, 2, 99 };int[] numbersClone = numbers.clone();Arrays.sort( numbersClone );System.out.println( Arrays.equals( numbers, numbersClone ) );  // true 

Arrays.sort(...) ...